def custom_meshgrid(x, y):
  xAxis = []; yAxis = []

  for i in range(x):
    xRow = []; yRow = []
    for j in range(y):
      xRow.append(j)
      yRow.append(i)
    xAxis.append(xRow)
    yAxis.append(yRow)

  return xAxis, yAxis


print('???', custom_meshgrid(4, 5))
